49 Utility and 2 Design Patents
#31 in Bartlesville, OK
#91 in Oklahoma
#21,279 in US
#40,013 in the World
rank by utility patentsForward Citations = 651
Company Filing History:

Other

4. 3 out of 969

5. 1 out of 664
China Petroleum & Chemical Corporation
where one patent can have more than one assignee
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